Blood sampling auxiliary device

Abstract

The utility model relates to a blood sampling auxiliary device. A blood sampling platform, a blood sampling pillow towel feeding mechanism, a tourniquet feeding mechanism and a cutting mechanism are arranged on a device body. The tourniquet feeding mechanism can automatically output tourniquets, and the cutting mechanism can cut off the tourniquets according to the set length. The blood sampling pillow towel feeding mechanism can enable the pillow towels to be circularly laid and recycled on the blood sampling platform, so that cleanness and comfort are guaranteed, and the risk of cross infection is reduced. A cover body and a seat body of the device body are connected through a button buckle, so that tourniquet roll material replacement and pillow towel operation are facilitated. The device uniquely integrates the functions of the blood sampling pillow towel and the tourniquet, is compact and small in structure, makes full use of the installation space, is ingenious in cooperation of all mechanisms, effectively solves the problems of inconvenience and potential sanitation hazards of a traditional blood sampling auxiliary device, greatly improves blood sampling convenience, accuracy and working efficiency, and is suitable for popularization and application. And an efficient, sanitary and convenient integrated solution is provided for blood sampling work.

Description

Technical Field

[0001] This utility model belongs to the technical field of blood collection auxiliary devices, and specifically relates to a blood collection auxiliary device. Background Technology

[0002] In the field of medical blood collection, smart blood collection pillows are widely used as auxiliary devices to support patients' hands during blood collection. During blood collection, a tourniquet is an indispensable tool used to temporarily block venous blood flow, allowing for clearer visualization of blood vessels and facilitating the blood collection procedure. Furthermore, tourniquets are designed for single use only to prevent cross-infection. However, existing smart blood collection pillows on the market currently have significant functional shortcomings.

[0003] Chinese patent application CN206102689U discloses a disposable tourniquet extractor and its automatic paper-changing pad assembly for blood collection. The hand-operated tourniquet in this device requires force to break during use. This forces nurses to spend extra time and effort obtaining the tourniquet when collecting blood from patients, increasing the number of steps and posing a risk of the tourniquet failing to break, thus severely impacting work efficiency. Furthermore, the tourniquet requires pre-cutting every 30cm, which undoubtedly increases the production process and restricts flexibility in adjusting the tourniquet length. From a manufacturing perspective, the pre-cutting not only increases production costs but also, due to its fixed length, makes it difficult to meet the personalized needs of different patients. In actual blood collection scenarios, patients vary in body shape and vascular condition, resulting in different requirements for tourniquet length. Secondly, its disposable tourniquet extractor uses a tray installed on the bottom plate of a drawer box to hold the tourniquet roll. While the drawer box design facilitates storage to some extent, the inconvenience during replacement and the risk of jamming become major obstacles to its application. Furthermore, the device has significant shortcomings in its overall structural design; it occupies a considerable amount of space and lacks compactness, which greatly reduces its convenience when used in blood collection stations.

[0004] Therefore, overcoming the above-mentioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technology and provides a blood collection auxiliary device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A blood collection auxiliary device includes a device body 1, on which a blood collection platform 2, a pillowcase feeding mechanism 3 for feeding a blood collection pillowcase 102 to the blood collection platform 2, a pressure band feeding mechanism 4 for outputting a pressure band 101, and a cutting mechanism 5 for cutting the pressure band 101; the pressure band feeding mechanism 4 includes a second motor 41 disposed within the device body 1, the rotor of the second motor 41 being connected to a belt drive pulley 42, the belt drive pulley 42 being connected to a belt driven pulley 43, the belt driven pulley 43 being coaxially connected to a second spiral rod 44, a first gear 45 meshing with the second spiral rod 44 being disposed beside the second spiral rod 44, and a second gear 46 coaxially disposed below the first gear 45, the second gear 46 being connected to the third... Gear 47 meshes with fourth gear 48. A first rotating body 49 coaxial with the fourth gear 48 is connected above it. The first rotating body 49 is provided with a second rotating body 40 symmetrical to it. The pressure band 101 is clamped between the first rotating body 49 and the second rotating body 40 and outputs by friction. The cutting mechanism 5 includes a first motor 51 installed in the device body 1. The rotor of the first motor 51 is connected to a first screw 52. The first screw 52 is connected to a sliding block 53 with internal threads. The device body 1 is also provided with a guide rail 54 for the sliding block 53 to slide along it. The sliding block 53 is connected to a cutter 55. The cutter 55 is provided with a cutter holder 56 along the cutting direction. The cutter holder 56 is provided with an opening 57 for the pressure band 101 to pass through.

[0008] Preferably, the sliding block 53 is provided with a first claw portion 531, and the cutter 55 is provided with a second claw portion 551. The first claw portion 531 and the second claw portion 551 are engaged and connected vertically. The cutter 55 is guided and moved within the cutter holder 56, and cuts the pressure band 101 through the opening 57 extending to the cutter holder 56.

[0009] Preferably, the sliding block 53 has a limiting block 58 with a protrusion on the bottom inside, and the device body 1 has a mounting base plate 50 inside, and the mounting base plate 50 has a limiting groove 59 for the limiting block 58 to move along its limiting position.

[0010] Preferably, the pulse belt feeding mechanism 4 includes: a second motor 41 located within the device body 1; the rotor of the second motor 41 is connected to a belt drive pulley 42; the belt drive pulley 42 is connected to a belt driven pulley 43 that moves synchronously with it; the belt driven pulley 43 is coaxially connected to a second spiral rod 44; a first gear 45 is provided beside the second spiral rod 44 and meshes with it; a second gear 46 is provided below the first gear 45 and coaxial with it; the second gear 46 meshes with a fourth gear 48 through a third gear 47; a first rotating body 49 is connected above the fourth gear 48 and coaxial with it; the first rotating body 49 has a second rotating body 40 symmetrical to it. In specific implementation, when the first rotating body 49 rotates, the pulse belt 101 is output outward by friction with the first rotating body 49.

[0011] Preferably, the mounting base plate 50 is provided with a first vertical shaft 411, the first vertical shaft is fitted with a swing element 412, one end of the swing element 412 is connected to the second rotating body 40, a mounting block 413 is provided next to the first vertical shaft, and a first spring 414 is connected between the mounting block 413 and the swing element 412; in specific implementation, when the pressure band 101 is conveyed between the first rotating body 49 and the second rotating body 40, as the thickness of the pressure band 101 increases, the spring is compressed, thereby generating a clamping force that cooperates with the first rotating body 49 to clamp the pressure band 101.

[0012] Preferably, the pillowcase feeding mechanism 3 includes a third motor 31 disposed within the device body 1, a first roll 32 connected to the third motor 31, a second roll 33, a second guide roller 34 disposed on the left edge of the blood collection platform 2, a third guide roller 35 disposed on the right edge of the blood collection platform 2, a fourth guide roller 36 disposed on the back of the blood collection platform 2, and a pressure roller 37 disposed in front of the fourth guide roller 36; unused pillowcases are wound on the second roll 33, and the unused pillowcases are sequentially conveyed to the blood collection platform 2 through the pressure roller 37, the fourth guide roller 36, and the third guide roller 35; used pillowcases are recycled to the first roll 32 through the second guide roller 34.

[0013] Preferably, the device body 1 includes a cover 11 and a base 12, and a latching assembly is provided between the cover 11 and the base 12; the latching assembly includes a hook portion 61, a slot portion 62 into which the hook portion 61 is engaged, a second spring 63 installed between the slot portion 62 and the base 12, and a button 64 provided on the slot portion 62; in a specific implementation, as a preferred embodiment, the user can press the button 64 to compress the second spring 63, causing the hook portion 61 to disengage from the slot portion 62, thereby unlocking the device.

[0014] Preferably, the seat 12 is provided with a pillowcase unwinding cavity 103 and a pressure belt unwinding cavity 104 from left to right. A column 107 is provided at the center of the pressure belt unwinding cavity 104. The top of the column 107 is a circular plane and the bottom is a hexagonal plane. Each side of the hexagon has an outward protrusion to increase friction. A first guide roller 105 is provided at the upper right corner of the pressure belt unwinding cavity 104.

[0015] Preferably, a support 13 is connected to the bottom of the cover 11, and the first roll 32 and the second roll 33 are installed on the support 13. The pressure belt is held in the pressure belt unwinding cavity 104 by the column 107.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] 1. This blood collection auxiliary device can automatically transport and retrieve blood collection pillowcases through a pillowcase feeding mechanism. The pressure band feeding mechanism can automatically output the pressure band, and through a special gear transmission and rotating body design, it stably transports the pressure band and can automatically adjust the clamping force according to the thickness of the pressure band, ensuring smooth and stable feeding.

[0018] 2. The cover and base of this blood collection auxiliary device are connected by a snap-fit ​​assembly, which allows medical staff to quickly open and close the device, facilitates the inspection, cleaning, and maintenance of internal components, extends the device's service life, and reduces maintenance costs. At the same time, the cylindrical design of the cuff unwinding chamber effectively prevents slippage during cuff unwinding, further improving the device's stability and reliability. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the case with the cover open.

[0020] Figure 2 This is a structural diagram of the case under normal use conditions;

[0021] Figure 3 This is a schematic diagram of the cutting mechanism in this case;

[0022] Figure 4 This is a top view schematic diagram of the feeding mechanism and cutting mechanism in this case;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the pressure belt feeding mechanism in this case;

[0025] Figure 7 This is a schematic diagram of the pillowcase feeding mechanism in this case;

[0026] Figure 8 This is an exploded view of the device itself in this case;

[0027] Figure 9 The diagram shows the structure of the upper shell of the base in this case, which is hidden from view. Detailed Implementation

[0028] The following examples will further illustrate the features of this utility model and other related features in detail, so as to enable those skilled in the art to understand them.

[0029] like Figures 1-9 As shown, to achieve the above objectives, this novel experimental design employs the following technical solutions:

[0030] (I) Assembly and Initial State of the Device

[0031] Install the first motor 51, the second motor 41, and the third motor 31 in their respective positions within the main body 1 of the device. Connect the cutting mechanism components, such as the first screw 52, ​​the sliding block 53, the guide rail 54, the cutter 55, and the cutter holder 56, according to the aforementioned connection relationship. Connect the belt drive pulley 42, the belt driven pulley 43, the second spiral rod 44, and a series of gears and rotating bodies, as well as the pressure belt feeding mechanism components. Install the first roll 32, the second roll 33, and the various guide rollers and pressure rollers, as well as the pillowcase feeding mechanism components. Place the pressure belt roll in the pressure belt unwinding cavity 104 and fix it with the column 107. Roll the unused pillowcase onto the second roll 33, ensuring that all components are securely installed and accurately positioned. At this point, the device is in its initial ready-to-use state.

[0032] (II) Pillowcase feeding process

[0033] When a blood collection pillowcase is needed, the third motor 31 is started, which drives the first drum 32 to rotate. Unused pillowcases on the second drum 33 are conveyed to the blood collection platform 2 by passing through the pressure roller 37, the fourth guide roller 36, and the third guide roller 35 in sequence. After blood collection is completed, the used pillowcase is recycled back to the first drum 31 through the second guide roller 35, realizing the automatic feeding and recycling cycle of the pillowcase.

[0034] (III) Feeding and Cutting Process of Pressure Belt

[0035] The second motor 41 is started, which drives the belt drive pulley 42 to rotate, which in turn drives the belt driven pulley 43, the second screw rod 44, and a series of gears to rotate, ultimately causing the first rotating body 49 to rotate. The pressure belt 101 is output from the pressure belt unwinding chamber 104 and outward through the first guide roller 105 by the frictional force with the first rotating body 49. During the output process, when the pressure belt 101 is output into the opening 57, the second rotating body 40, under the action of the rotating element 412 and the first spring 413, generates a clamping force that cooperates with the first rotating body 49 to clamp the pressure belt 101, ensuring stable output of the pressure belt.

[0036] When the pressure band reaches the set length, the first motor 51 is activated. The first motor 51 drives the sliding block 53 to slide on the guide rail 54, converting the rotational motion into the linear reciprocating motion of the cutter 55. The cutter 55 cuts the pressure band through the opening 57 on the cutter holder 56. The first motor 51 is a stepper motor, which can precisely control the moving distance of the cutter 55 to ensure accurate cutting position.

[0037] (iv) Material replenishment and replacement

[0038] When the unused pillowcases on the second roll 33 are about to run out or need to be replaced with a different type of pillowcase, medical staff can perform the following operations: First, press button 64 to compress the second spring 63, causing the hook 61 to disengage from the slot 62, thereby opening the cover 11. Next, install a new pillowcase roll on the second roll 33, ensuring that the starting end of the pillowcase can smoothly connect with the fourth guide roller 36. If any used pillowcase rolls on the first roll 32 need to be cleaned or replaced, they can be removed and disposed of properly. Finally, close the cover 11, the hook 61 re-engages into the slot 62, and the device can continue to feed pillowcases normally.

[0039] When the remaining amount of pulse belt material in the unwinding chamber 104 is low or when it is necessary to replace it with a pulse belt of a different specification, follow these steps: First, open the cover 11 and remove an empty pulse belt core (if available). Then, roll the new pulse belt onto the column 107, ensuring that one end of the pulse belt can be smoothly drawn out from the first guide roller 105. During installation, ensure that the pulse belt roll is securely installed on the column 107, with its hexagonal bottom structure tightly fitting against the bottom of the column. Use the protrusions to increase friction and prevent the pulse belt roll from slipping during rotation. Then close the cover 11 to allow for normal feeding and use of the pulse belt.

[0040] In summary, this blood collection auxiliary device, through its unique structural design and the collaboration between its various mechanisms, effectively solves many inconveniences and hygiene hazards inherent in traditional blood collection processes. Its blood collection pillowcase feeding mechanism enables automatic cyclical laying and recycling of the pillowcase, ensuring the cleanliness of the blood collection platform and patient comfort; the tourniquet feeding and cutting mechanism accurately outputs and cuts tourniquets of appropriate length, greatly improving the convenience and accuracy of blood collection operations.

[0041] Of particular note is that the main body 1 of this device includes a cover 11 and a base 12. The latching assembly 6 between the two has a simple and compact structure. The hook part 61, the slot part 62, the first spring 63, and the button 64 enable convenient opening and closing. The cover design greatly facilitates operation by medical staff. When it is necessary to replenish materials or inspect, clean, or repair internal components, simply press the button, compress the spring to disengage the hook part from the slot part, and the cover can be easily opened. For example, during the replacement of pillowcases or compression bandages, medical staff can quickly open the device, accurately install new materials and dispose of old materials, and then conveniently close the cover, allowing the device to quickly return to normal operation, greatly improving work efficiency. The base has a pillowcase unwinding cavity 103 and a compression bandage unwinding cavity 104 arranged from left to right. This partitioned layout makes reasonable use of the internal space of the base. The pillowcase feeding mechanism 3 cleverly utilizes the internal space of the device body 1. For example, the third motor 31 is installed in a position that does not occupy too much horizontal or vertical space. The first roll 32 and the second roll 33 are installed through the support 13 connected to the bottom of the cover 1. This layout effectively controls the space occupied by the rolls in the vertical direction. The blood collection platform 2 is located at a suitable position on the top of the device, and its size is just right to meet the patient's arm placement needs. It is neither too large to waste space nor too small to affect the comfort of blood collection operations. This combination makes the overall device more compact and reduces the space occupied, making it perfectly adaptable to various blood collection station usage scenarios. Whether in a small clinic with limited space or in a large hospital blood collection area with a more compact equipment layout, it can be easily installed and operate efficiently. All technical solutions that are the same as or similar to this case should be considered to fall within the protection scope of this case.

Claims

1. A blood collection auxiliary device, comprising a device body (1), wherein the device body (1) is provided with a blood collection platform (2), a pillowcase feeding mechanism (3) for feeding a blood collection pillowcase (102) to the blood collection platform (2), a pressure band feeding mechanism (4) for feeding a pressure band (101) outward, and a cutting mechanism (5) for cutting the pressure band (101), characterized in that, The pulse belt feeding mechanism (4) includes a second motor (41) installed in the device body (1). The rotor of the second motor (41) is connected to a belt drive pulley (42). The belt drive pulley (42) is connected to a belt driven pulley (43). The belt driven pulley (43) is coaxially connected to a second spiral rod (44). A first gear (45) is provided next to the second spiral rod (44) and meshes with it. A second gear (46) is provided below the first gear (45) and is coaxial with it. The second gear (46) meshes with a fourth gear (48) through a third gear (47). A first rotating body (49) is connected above the fourth gear (48) and is coaxial with it. The first rotating body (49) is provided with a second rotating body (40) symmetrical to it. The pulse belt (101) is clamped between the first rotating body (49) and the second rotating body (40) and outputs by friction. The cutting mechanism (5) includes a first motor (51) installed in the device body (1). The rotor of the first motor (51) is connected to a first screw (52). The first screw (52) is connected to a sliding block (53) with internal threads. The device body (1) is also provided with a guide rail (54) for the sliding block (53) to slide along it. The sliding block (53) is connected to a cutter (55). The cutter (55) is provided with a cutter holder (56) along the cutting direction. The cutter holder (56) is provided with an opening (57) for the pressure pulse band (101) to pass through.

2. The blood collection auxiliary device according to claim 1, characterized in that, The sliding block (53) is provided with a first claw part (531), and the cutter (55) is provided with a second claw part (551). The first claw part (531) and the second claw part (551) are connected by being engaged with each other. The cutter (55) moves within the cutter holder (56) and cuts the pressure band (101) through the opening (57) that extends through the cutter holder (56).

3. The blood collection auxiliary device according to claim 1, characterized in that, The sliding block (53) has a limiting block (58) with a protrusion on the bottom inside. The device body (1) has a mounting base plate (50) inside. The mounting base plate (50) has a limiting groove (59) for the limiting block (58) to move along its limiting position.

4. The blood collection auxiliary device according to claim 3, characterized in that, The mounting base plate (50) is provided with a first vertical shaft (411), and a swing element (412) is sleeved on the first vertical shaft (411). One end of the swing element (412) is connected to the second rotating body (40). A mounting block (413) is provided next to the first vertical shaft (411), and a first spring (414) is connected between the mounting block (413) and the swing element (412).

5. The blood collection auxiliary device according to claim 1, characterized in that, The pillowcase feeding mechanism (3) includes a third motor (31) installed in the device body (1), a first drum (32) connected to the third motor (31), a second drum (33), a second guide roller (34) installed on the left edge of the blood collection platform (2), a third guide roller (35) installed on the right edge of the blood collection platform (2), a fourth guide roller (36) installed on the back of the blood collection platform (2), and a pressure roller (37) installed in front of the fourth guide roller (36). Unused pillowcases are wound on the second drum (33). The unused pillowcases are conveyed to the blood collection platform (2) in sequence through the pressure roller (37), the fourth guide roller (36), and the third guide roller (35). The used pillowcases are recycled to the first drum (32) through the second guide roller (34).

6. The blood collection auxiliary device according to claim 1, characterized in that, The device body (1) includes a cover (11) and a seat (12), and a buckle assembly is provided between the cover (11) and the seat (12); the buckle assembly includes a hook (61), a slot (62) for the hook (61) to engage, a second spring (63) installed between the slot (62) and the seat (12), and a button (64) provided on the slot (62).

7. The blood collection auxiliary device according to claim 6, characterized in that, The seat (12) is provided with a pillowcase unwinding cavity (103) and a pressure belt unwinding cavity (104) from left to right. A column (107) is provided in the center of the pressure belt unwinding cavity (104). The top of the column (107) is a circular plane and the bottom is a hexagonal plane. Each side of the hexagon has an outward protrusion to increase friction. A first guide roller (105) is provided in the upper right corner of the pressure belt unwinding cavity (104).

8. The blood collection auxiliary device according to claim 6, characterized in that, The bottom of the cover (11) is connected to a support (13), and the first roll (32) and the second roll (33) are installed on the support (13).

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